GraphQL Ruby vs Mercurius
GraphQL Ruby
graphql-ruby.orgMercurius
mercurius.devSide by side
| Figure | GraphQL Ruby | Mercurius |
|---|---|---|
| Price from | $91.67/mo | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 3 | 0 |
| Spec score · GraphQL Tools | 7.8 (#11) | 6.5 (#24) |
| Installation | The open-source gem is installed from RubyGems by adding graphql to an application's Gemfile and running bundle install. | The documented installation command is npm i fastify mercurius graphql, with a Yarn alternative also provided. |
| License | RubyGems lists the graphql gem license as MIT, while GraphQL::Pro and GraphQL::Enterprise use special commercial licenses. | The repository lists the project under the MIT license. |
Plans
GraphQL Ruby
- GraphQL Ruby gemFree
- GraphQL::Pro$1,100 a year
- GraphQL::Enterprise$2,400 a year
In their own words
GraphQL Ruby
GraphQL Ruby is a free, self-hosted Ruby gem that implements the GraphQL Server Specification for Ruby or Rails applications. It provides a self-documenting, strongly typed schema and serves queries, mutations, subscriptions, streaming responses, and multiplexed queries. Configurable depth and complexity validation can reject deeply nested or overly complex requests. Authorization tools handle schema visibility and checks on application objects during execution, while authentication is generally left to the application controller. GraphQL::Dataloader batches external data access and caches results per query; AsyncDataloader supports parallel I/O. Documentation covers Relay, Apollo Client, GraphQL.js Client, GraphiQL, urql, and custom JavaScript, plus monitoring integrations. The open-source gem is installed through RubyGems and uses the MIT license. The GraphQL Ruby gem costs nothing. GraphQL::Pro costs $1,100 a year, and GraphQL::Enterprise costs $2,400 a year under commercial licenses.